Reinforced crown cap

Description

TECHNIQUE FIELD

This invention directly refers to a crown cap or cork that is used to seal containers containing water, fruit juice, soft drinks, beer and spirituous beverages.

BACKGROUND

At present, state-of-the-art crown-type caps are made up with:

• • 1. A flat upper metallic cap consisting of a round plate-type piece with radial, girdling and descending skirt-type crimping, allowing for its marginal bending on the neck of container to be sealed in order to get a tight holding of crown cap on mouth of bottle or container.
  • 2. Thermoformed internal plastic stuffing or disk aiming at getting a hermetic closure on the mouth of a bottle or container.

A technical problem generally found in crown-type caps currently available is the excess of steel involved in the manufacture of state-of-the-art crown caps, which leads to a larger environmental pollution and higher costs.

INVENTION DESCRIPTION

This “Reinforced Crown Cap” solves the above mentioned technical problem. Innovation is directly applied on flat upper metallic part of crown cap and consists of a round plate-type piece peripherally provided with radial, girdling and descending skirt-type crimping (Number 2, Drawing A, Number 5, Drawing B) allowing for its marginal bending on neck of a container to be sealed. A structural reinforcement is applied on round plan (Number 1, Drawing A, Number 4, Drawing B) by deforming steel in the form of high or low relief crimping with a radial symmetry with no compromise of basic features of a Crown Cap consisting in bottle sealing up. Therefore, no reinforcement shall be placed on stuffing—container contact area.

An ideal structural reinforcement is obtained by application of high or low relief grooves in the form of one to three coaxial rings, a cross or a star as long as it has a radial symmetry on round plan of the “Reinforced Crown Cap.”

Technical Advantage: Innovating features of the “Reinforced Crown Cap” refer to the structural reinforcement (Number 1, Drawing A, Number 4, Drawing B) which allows for a 20% substantial decrease of steel thickness used for state-in-the-art crown caps. This can be achieved by compensation with an increase in steel hardness plus a reinforcement of one to three axial rings, a cross or a star as long as it is symmetrical on the flat upper metallic part of cap (mirror).

This “Reinforced Crown Cap” with the above mentioned structural reinforcement can be applied on either version of state-of-the-art crown cap:

• • Fixed Crown (PRY-OFF): to be opened with a lever.
  • Rotating Crown (TWIST-CROWN): to be open with a single twist.

DRAWING DESCRIPTION

• • Drawing A: It represents the “Reinforced Crown Cap” in its commercially available form, side section sight, where structural reinforcements are seen (Number 1, Drawing A), as well as girdling and descending skirt-type crimping (Number 2, Drawing A) and a stuffing part (Number 3, Drawing A).
  • Drawing B: It represents the “Reinforced Crown Cap” in its commercially available form, upper sight, where structural reinforcement are seen (Number 4, Drawing B); as well as girdling and descending skirt-type crimping (Number 5, Drawing B).

TECHNIQUE FOR MANUFACTURING THE “REINFORCED CROWN CAP”

The “Reinforced Crown Cap” is manufactured by a pressing operation on a steel plate.

The “Reinforced Crown Cap” is made up with a round plate-type piece furnished with peripherally radial, girdling and descending skirt-type crimping (Number 2, Drawing A; Number 5, Drawing B), allowing for marginal bending on neck of the container to be sealed. A structural reinforcement is applied on round plan (Number 1, Drawing A, Number 4, Drawing B) by deforming steel in the form of high and low relief crimping with a radial symmetry, with no compromise of basic features of Crown Cap that consists of bottle sealing. Therefore, reinforcement shall not be applied to the stuffing—container contact area.

An ideal structural reinforcement is given by application of high or low relief grooves in the form of one to three axial rings, a cross or a star as long as it has a radial symmetry on round plan of the “Reinforced Crown Cap.”

APPLICATION

• • a. The “Reinforced Crown Cap” is used to seal glass containers containing water, fruit juice, soft drinks, beer and spirituous beverages (liquor).
  • b. Economic purpose: Innovating features of the “Reinforced Crown Cap” shall allow for a substantial decrease in steel thickness used for crown caps.
  • c. It does not require additional operations in the manufacturing process.
  • d. Ecologic purpose: It reduces steel use which implies a decrease in power required for manufacturing products.